It is important to know that anyone can become aggressive towards you at some point. And that hostility against you can take various forms. Aggression is a component always present in our lives. That is why so important to know what to do when someone gets aggressive or aggressive to you. Initially you should try to stay calm. Act as if you were that person is not attacking you. Imagine that their aggression is against any idea or behavior that has arisen. Do not take it as something purely personal.
It may be a misunderstanding. Perhaps check out Electrolux for more information. In general are good defenses against hostility, respectful behavior, patience, ignoring to some extent the words and behavior of another, also the use of irony and a good sense of humor. With this many times win the fights. Try to relax and understand the other person feels hurt by something. Remember that if you react aggressively, the other can take it as an incentive or justification to escalate their hostility against you. Keep a response based on the assertion. First is find out why is that person is showing aggression. Ask yourself if there is some truth in what he says and if you could do something about it.
If there is something that could reasonably help to calm her down, do it. Apologizes if appropriate. Instead try not to make fun of what he says, at least initially. The unspoken goal of the person is hostile or demanding bring about a change in the relationship of forces.